Engine Oil

CHANGE OIL SOON
The DIC illuminates the CHANGE OIL SOON indicator when the PCM determines that the engine oil should be changed. The DIC receives a discrete input from the PCM requesting illumination. When this indicator is on the BCM activates the audible warning. Once the oil is changed, perform the engine oil monitor reset procedure in order to clear the CHANGE OIL SOON indicator. Refer to GM Oil Life System - Resetting in Maintenance and Lubrication.

LOW OIL LEVEL
^ The IPC illuminates the LOW OIL LEVEL indicator when the PCM detects a low engine oil level condition. The IPC receives a discrete input from the PCM requesting illumination.
^ The IPC performs the displays test at the start of each ignition cycle. The IPC illuminates the LOW OIL LEVEL indicator.

LOW OIL PRESSURE
^ The IPC illuminates the low oil pressure indicator when the engine oil pressure switch detects low oil pressure. The IPC receives a discrete input from the engine oil pressure switch requesting illumination.
^ The IPC performs the displays test at the start of each ignition cycle. The IPC illuminates the low oil pressure indicator.